Dynamic height viewpager with recyclerview and tablayout

I have a viewpager with 3 pages and each of the pages may or may not contain a recyclerview. The count of items in recyclerview vary from users to users. I have made a custom view pager following this question: How to wrap the height of a ViewPager to the height of its current Fragment?.
The issues that I face now are 2 things:

1. While switching tabs, requestLayout() is called for each of the fragments. So when recyclerview contains a lot of items, there is a lag while switching because It is measuring the tabs again and again. And the items in the recyclerview are dynamic meaning it has a load more item on scroll behavior.

2. When the recyclerview have no items, a textview is shown to indicate the absence of items. Because the viewpager wraps the content, It seems that I cannot center the textview in the fragment. So when there are no recyclerview, I need the viewpager to fill the whole height.

Here is my CustomViewPager code:

public class CustomViewPager extends ViewPager {

    private int currentPagePosition = 0;
    Context context;

    public CustomViewPager(@NonNull Context context) {
        super(context);
        this.context = context;
    }

    public CustomViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        setMeasuredDimension(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
        View child = getChildAt(currentPagePosition);
        if(child != null) {
            child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            int h = child.getMeasuredHeight();
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(h, MeasureSpec.EXACTLY);
        }
        if(heightMeasureSpec != 0) {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }

    public void measureCurrentView(int position) {
        currentPagePosition = position;
        requestLayout();
    }


    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        return false;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        return false;
    }
}

Here is my viewpager layout file:

<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        
        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="250dp"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            android:background="#F8F8F8"
            android:id="@+id/header"/>

        <com.google.android.material.tabs.TabLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toBottomOf="@id/header"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            android:id="@+id/tabs">

            <com.google.android.material.tabs.TabItem
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="1ST"
                />
            <com.google.android.material.tabs.TabItem
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="2ND"
                />
            <com.google.android.material.tabs.TabItem
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="3RD"
                />


        </com.google.android.material.tabs.TabLayout>

        <com.example.smilee.adapters.CustomViewPager
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/items"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tabs"

            />
        
    </androidx.constraintlayout.widget.ConstraintLayout>

</androidx.core.widget.NestedScrollView> 

And this is the layout for each of the fragments:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@android:color/white">

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/recyclerview"
        android:nestedScrollingEnabled="false"
        android:visibility="gone"/>


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:text="No items to show."
        android:fontFamily="@font/medium"
        android:textColor="#777"
        android:textSize="15dp"
        android:gravity="center"
        android:id="@+id/noItemText"
        android:includeFontPadding="false"
        android:visibility="visible"/>


</androidx.constraintlayout.widget.ConstraintLayout>

How to achieve this?
How can I switch between tabs so fast irrespective of count of items in recyclerview and How can I center the textview by filling the whole height if the recyclerview is not available? Hope you can help. Regards.

from Dynamic height viewpager with recyclerview and tablayout